Suction-box.



N. SHO REY & F. P. FLYNN. SUCTION BOX.

APPLICATION FILED JUNE 7. l9l6.

1,216,861. Patented Feb. 20,1917.

. ings,where1n one embodimentof the present a ED STATES: PATENT .oFFioE.

NAIOLEON SHOBEY AND FRANCIS, FLYNN, OF WOODLAND, MAINE.

sUoTIoN-Box.

Specification of Iaetters Patent.

To all whom it may concern:

Be it known that we, NAPoLnoN SHOREY and Francis P. FLYNN, citizens of the United States, both residing at Woodlandf in the county'of Washington and State 0 .Maine, have invented certain new and useful Improvements in Suction-Boxes; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in'the art to which it appertains to make-and use the same. 7 v 1 The present invention relates to improvements in suction boxes such as aroused on Fourdrinier machines, and more specifically the invention consists in improvements in suction box tops which are provided'with perforations for permitting air and moisture to be drawntherethrough by the pump apparatus and through the wire conveyer which passes .over the suction box tops. in a well known manner.

Broadly stated, the present invention contemplates the supplying to the under side of the wire conveyer, on which the pulp, is carried, a lubricant immediately prior to passing over the suction box tops, whereby such passage will be facilitated and the friction therebetween reduced.

It is among the further objects of the invention to provide the suction box top'with metallic inserts or reinforces, upon which will devolve the function of taking up the friction created by the passing of the wire present found so troublesome and expensive. 3

In the achompanying drawings forming a part of this-application, andin which similar reference symbols indicate corresponding parts in the several views:

Figure 1 is a top plan new of an improved suction box as constructed in accordance with the present invention; and

Fi 2 is a cross" sectional view taken on the 11ne 2-2 in Fig. 1.

Referring more particularly to the draw- 7 invention is illustrated, at 1 is designated one of the usual suction boxes, vwhich at present is constructed of metal and mounted on the Fourdrinier machine in a manner which will be apparent to those skilled in this art; The box may be equipped with the usual movable heads for well known purposes, and the same'is connected up to a suct1on producing apparatus after the approved fashion.

The tops of'thesuction boxes as now constructedjrare of wood, perforated to admit air drawn by'the suction apparatus from the atmospherethrough the pulp or other materlal on the wire conveyer which is indicated at 2, and which is trained over the breast, couch, and table rolls, these not be-' ing shown, as forming no part of the present invention.

Patented Feb. 20, 1917. Application filed June 7, 1916. SerialR'o. 102,818, Y i

With wooden tops as presently employed,

surface over which the wiremust pass. By

reason of the action of the suction in drawing the wire into close contact with the box tops, the inequality produced by the grooving becomes a'serious obstacle to the proper operation of the wire, creating unusual fric tion: between these parts, decreasing the life both of the wire and box tops, and requiring an increased amount of power to draw suc wireover the suction boxes.

"'In order to obviate the above and other difliculties in the operation of the wire over suction boxes, the box covers or tops 3, which may be constructed of wood in the usual manner, are grooved to receive triangular or V-shaped insertions or reinforces 4, which are advantageously chilled upon their upper surfaces so as to resist to a high degree the action of friction. It is to be understood,

however, that, while such insertions or reinforces 4 may be of chilled metal, the same may be of other material found suitable in practice for this purpose, and we do not reinforces 4, while. they areshown in Fig; 1

- wish ourselves understood as restricting the invention to the use of chilled or other metal.

The box top 3 is traversed by the usual perforationsfi, and the'insertions or reinforces 4 may also, if desired, be perforatedas indicated at 6. The perforations 6 in the are nevertheless of practical .utility in af-.

' for-ding an increased surface exposure to the action of the suction in order that.\ all parts of the pulp or other material carried by the suction box top with the reinforces as herewire, may be effectively dried.

The reinforces 4, as shown in the present drawings, may be stamped out from a sheet of metal, leaving a longitudinal strip 7 run ning lengthwise of the suction box and being common to all of such reinforces; the strip 7 being secured as by screws 8 or other means to the top 3 of the box. The strip 7 is formed with a flange 9, illustrated more particularly in Fig. 2 to be turned down over the longitudinal edge of the cover 3 and secured thereto as by screWs or other means 10. At their 'apexes the inserts 4 may be further secured to the top 3 of the box 1' by screws or other fastening means 11, and preferably have their extremities turned down against the adjacent edge of the cover 3, as indicated at 12 in Fig. 2, where recesses are provided to receive the same, so that the inserts as a whole may lie flush in the cover 3 and form a continuous and unbroken surface therewith.

It will be understood that the reinforces 4 will preserve the top 3 of the suction box and will prevent grooving by the action of the wire 2 in its passage over the same, and will also reduce the friction to a minimum to prolong the life both of the wire and box covers. While this construction in itself may be employed with excellent results to constitute a substantial improvement overthe present form of suction box covers, the action of the wire in passing over the box cover 3 with the reinforces 4 may be facilitated by supplying to the under side of the wire a lubricant, such, for instance, as water.

For this purpose a trough 13, advantageously of sheet metal, although'wedo not wish to be confined to this material, is secured preferably to the box cover 3 by the fastening means 10 for holding'the flange 9, the edge of the trough 13' being inserted beneath said flange as see Fig. 2. Through the heads 14 and 15, of thetrough, passes a pipe 16 having minute orifices 17 therein, such pipe '16 being in communication with a source of water supply which is delivered to the under side of the. wire 2 by being sprayed thereon in small jets.

Ifdesired, a slight flow from the trough '13 may be inducedonto the cover 3 of the tion box tops as now constructed;' or may be used in conjunction with the improved in described; and likewise, the improved suction box top, in accordance with the present invention, may be employed either alone f It is to be appreciated that the lubricating .deviceasherein shownmay' be employed to *lubricateiwires in their'passage across sucor in conjunction with'thewater supply deyice as may be found desirable or necessary in practice. I

It is obvious that those skilled in the art may vary the details of construction and arrangements of parts without departing from the spiritof our invention, andtherefore we do not wish to be-limited to such features except as may be required by the claims.

We claim:

1. A suction box including a top, and reinforces secured to said top, substantially as described.

2. The combination with a conveyer, of a suction box having a top, and reinforces set flush in said top, substantially as described.

3. The combination with a metallic conveyer, of a suction box having a perforated wooden top, and metal reinforces mounted flush in said to for receiving the wire conveyer, substantlally as described.

4. The combination with a conveyer, of a suction box having a perforated top over which said conveyer is arranged to travel, and means for supplying a lubricant to the convever. substantially as described.

5. The combination with a conveyer, of a suction box having a perforated top for receiving said conveyer, and means for. spraying a lubricant onto the under side of said conveyer, substantially as described.

6. The combination with a conveyer, of a suction box having a perforated top for receiving said conveyer, a trough secured to one side of said suction box, and a perforated-pipe in said trough for spraying a lubricant onto the under side of said conveyer, substantially as described.

7. The combination with a conveyer, of a suction box having a perforated top, reinforces in said top for contacting with said conveyer, and means for spraying water onto the under side of said conveyer prior to its passage over said box, substantially as described.

8. In combination with a conveyer, of a suction box having a perforated top, metallic passage over said suction box, substantially triangular reinforces set flush in said top, a. as described. 7 trough secured to one side of said box, and In testimony whereof, we affix our signaa perforated pipe in communication with a tures.

5 source of water supply for spraying water NAPOLEON. SHOREY.

onto the under side of said wire prior to its FRANCIS P. FLYN N 

